My stool was GREEN

I was having diarrhea from food poisoning. Then i notice my stool was GREEN.

Surprise.... so i do some research from internet.

The first reason for green poop is something that your body creates naturally. Your gall bladder secretes this bright green substance known as bile. Bile is used for the body to ingest fats and vitamins. As it passes through the digestive tract, it will change from green to yellow to brown (which is what you see on the other end).
So, if you see green poop, chances are pretty good that your food went through the digestive tract faster than normal resulting in bile not being able to change color from green to brown. You may see this in diarhhea as typically diarhhea doesn't stay in your system long enough for the bile to leech nutrients from the digested food

Is green poop in adults a cause for concern?
It depends.